Picture Helminthomorph milliped (Spirobolida, Xyloiulidae, Xyloiulus)
adult lateral view of whole body. North America, USA, Utah. Donor unknown.
Heliminthomorph milliped (Spirobolida, Xyloiulidae, Xyloiulus) adult, closeup of midbody region. North America, USA, Utah. Donor unknown.

Picture

Helminthomorph milliped (Spirobolida, Xyloiulidae, Xyloiulus)
adult closeup of caudal end. North America, USA, Utah. Donor unknown.

Helminthomorph milliped (Spirobolida, Xyloiulidae, Xyloiulus?) adult, closeup of anterior end. North America, USA, ?Utah. Donor unknown.